{"id":20658,"date":"2023-10-13T13:00:59","date_gmt":"2023-10-13T13:00:59","guid":{"rendered":"https:\/\/snipool.com\/?p=20658"},"modified":"2023-10-13T13:00:59","modified_gmt":"2023-10-13T13:00:59","slug":"quelques-celebres-nebuleuses","status":"publish","type":"post","link":"https:\/\/snipool.com\/fr\/quelques-celebres-nebuleuses\/","title":{"rendered":"Quelques c\u00e9l\u00e8bres n\u00e9buleuses"},"content":{"rendered":"<p>Les n\u00e9buleuses sont des nuages, form\u00e9s de gaz et de poussi\u00e8res interstellaires, qui flottent un peu partout dans la Voie lact\u00e9e. Certaines sont des berceaux o\u00f9 naissent les \u00e9toiles, d\u2019autres signalent qu\u2019une \u00e9toile est morte. Toutes les n\u00e9buleuses ont des diff\u00e9rentes couleurs et formes comme des taches.<\/p>\n<p>Les astronomes distinguent deux sortes de n\u00e9buleuses\u00a0: <em>les n\u00e9buleuses plan\u00e9taires\u00a0<\/em>: il s\u2019agit d\u2019un \u00ab\u00a0cocon\u00a0\u00bb de gaz entourant une \u00e9toile dont il a \u00e9t\u00e9 \u00e9ject\u00e9. <em>Les n\u00e9buleuses gazeuses<\/em> sont des grands nuages form\u00e9s de gaz et de poussi\u00e8res. En leur sein se forment des \u00e9toiles dont le rayonnement ultraviolet excite l\u2019hydrog\u00e8ne contenu dans la n\u00e9buleuse, qui \u00e9met une lumi\u00e8re rouge. D\u2019autres n\u00e9buleuses n\u2019\u00e9mettent pas par elles- m\u00eames, mais sont \u00e9clair\u00e9es par la lumi\u00e8re des \u00e9toiles proches. D\u2019autres n\u00e9buleuses encore, appel\u00e9es les <em>n\u00e9buleuses obscures<\/em>, n\u2019\u00e9mettent rien, mais la poussi\u00e8re qu\u2019elles contiennent absorbe la lumi\u00e8re des astres situ\u00e9s derri\u00e8re elles.<\/p>\n<p>La n\u00e9buleuse d\u2019<em>Androm\u00e8de<\/em> a \u00e9t\u00e9 aper\u00e7ue \u00e0 l\u2019oeil nu d\u00e8s le X<sup>e <\/sup>si\u00e8cle par des astronomes arabes.<\/p>\n<p>La <em>Lyre M57<\/em> est une c\u00e9l\u00e8bre n\u00e9buleuse de type plan\u00e9taire. Elle a une forme d\u2019anneau entourant la faible \u00e9toile centrale.<\/p>\n<p>La n\u00e9buleuse <em>M27<\/em> ou <em>Dumb- bell<\/em> est une autre c\u00e9l\u00e8bre n\u00e9buleuse plan\u00e9taire, qui se trouve dans la constellation du Petit Renard.<\/p>\n<p>La n\u00e9buleuse <em>M42<\/em> est une n\u00e9buleuse gazeuse. Elle est situe dans la constellation d\u2019Orion.<\/p>\n<p>La n\u00e9buleuse de la <em>Car\u00e8ne<\/em> cache une grande \u00e9toile sur le point d\u2019exploser.<\/p>\n<p>La n\u00e9buleuse de l\u2019<em>H\u00e9lice<\/em> a des r\u00e9gions jaunes et rouges qui sont des \u201ecoquilles\u201c de gaz, crach\u00e9es par une vieille \u00e9toile.<\/p>\n<p>La n\u00e9buleuse, qui entoure les Pl\u00e9iades, fait partie de celles qui n\u2019\u00e9mettent pas de lumi\u00e8re par elles- m\u00eames. Elle est \u00e9clair\u00e9e par la lumi\u00e8re d\u2019une \u00e9toile.<\/p>\n<p>La n\u00e9buleuse en forme de <em>T\u00eate de cheval<\/em> est une n\u00e9buleuse obscure, qui se situe dans la constellation d\u2019Orion.<\/p>\n<p>La n\u00e9buleuse d\u2019<em>Orion<\/em> abrite dans ses langes des quantit\u00e9s de b\u00e9b\u00e9s \u00e9toiles.<\/p>\n<p>Les n\u00e9buleuses de l<em>\u2019Eskimo<\/em>, de <em>l\u2019Oeil de chat<\/em> et du <em>Battant de cloche<\/em> sont des n\u00e9buleuses plan\u00e9taires. Quand une \u00e9toile arrive \u00e0 la fin de sa vie, elle s\u2019essouffle et souffle, pour se d\u00e9barrasser d\u2019une partie de son gaz. Ainsi ces trois n\u00e9buleuses sont n\u00e9es.<\/p>\n<p>La n\u00e9buleuse <em>Am\u00e9rique du Nord<\/em> est \u00e9clair\u00e9e par des \u00e9toiles voisines.<\/p>\n<p>La n\u00e9buleuse <em>IC 418<\/em> est une n\u00e9buleuse plan\u00e9taire. L\u2019\u00e9toile, qui se trouve dans son centre, est env\u00e9lopp\u00e9e dans plusieurs \u201ecoquilles\u201c de gaz.<\/p>\n<p>La n\u00e9buleuse <em>Messier 20<\/em>, appel\u00e9e encore <em>le Tr\u00e8fle,<\/em> se situe dans la constellation de Sagittaire, \u00e0 3 200 ann\u00e9es- lumi\u00e8re de nous (une ann\u00e9e- lumi\u00e8re vaut 10 millions de millions de kilom\u00e8tres ou 9 500 milliards de km, c\u2019est la distance que la lumi\u00e8re parcourt en un an).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les n\u00e9buleuses sont des nuages, form\u00e9s de gaz et de poussi\u00e8res interstellaires, qui flottent un peu partout dans la Voie lact\u00e9e. Certaines sont des berceaux o\u00f9 naissent les \u00e9toiles, d\u2019autres signalent qu\u2019une \u00e9toile est morte. Toutes les n\u00e9buleuses ont des diff\u00e9rentes couleurs et formes comme des taches. Les astronomes distinguent deux sortes de n\u00e9buleuses\u00a0: les &hellip;<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1080],"tags":[4742,6126,5576,6129,6127,6128],"class_list":["post-20658","post","type-post","status-publish","format-standard","hentry","category-science-fr","tag-astronomes","tag-celebres-nebuleuses","tag-etoile","tag-la-constellation-de-sagittaire","tag-la-voie-lactee","tag-les-pleiades"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Quelques c\u00e9l\u00e8bres n\u00e9buleuses - Snipool<\/title>\n<meta name=\"description\" content=\"Les n\u00e9buleuses sont des nuages, form\u00e9s de gaz et de poussi\u00e8res interstellaires, qui flottent un peu partout dans la Voie lact\u00e9e.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/snipool.com\/fr\/quelques-celebres-nebuleuses\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quelques c\u00e9l\u00e8bres n\u00e9buleuses - 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